Sucker-rod.



0. L. MODONALD 6L G. MAPES.

SUGKER ROD.l

`APPLIQATION FILED JULY 24, 1911.

139013,93@ Patented Dec.26,1911.

F 2 BV OWEN L. MGDONALD AND GEORGE MAPES, OF TAFT', CALIFORNIA.

STICKER-ROD.

Specification of Letters Patent.

Patented Dec. 26, 1911.

Application filed July 24, 1911. Serial No. 640,201.

To all whom it may concern:

Be it known that we, OWEN L. MCDONALD and Gfx-:onor: Mares, citizens ofthe United States, residing at Taft,vin the county of Kern and State ofCalifornia, have invented certain new and useful Improvements inSucker-Rods, of which the following is a specification.

This invention relates to couplings for sucker rods.

In oil fields and other places where pumps y are used in deep wellsrequiring great lengths of sucker rods, the same are gener'- allycomposed of several sections, and it has been difficult to secure asatisfactory coupling joint Jfor the same.

An object of this invention is to provide a coupling joint havingpeculiar locking means preventing the same from jarring loose in the usethereof.

Another object is to provide a joint which may be easily and quicklyassembled and taken apart, combining strength and efficiency in use.

With the above and other objects in View, this invention consists in theconstruction, combination, and arrangement of parts, all as hereinaftermore fully described, claimed, and illustrated in theaccompanyingdrawings, wherein-d Figure l is aside elevation of one portion of asucker rod provided with the present invention; Fig. 2 is a view of theoppo-v site portion of the joint; Fig. 3 is a longitudinal section;Fig..4 is a transverse section of a modified form; Fig. 5 is a side viewof'a portion of the sucker rod used therein; Fig. G is aside view of theparts shown in Fig. l and Fig. 7 is a side elevation of the sleeveemployed in the modified form.

Throughout the following detail description and on the several figuresof the drawings, similar parts are referred to by like referencecharacters.

The rod portion A illustrated in Fig. 1 has a projection l and a recess2, said projection and recess engaging With the recess and projection 8and 4 of the part B illustrated in Fig. 2. A threaded sleeve 5 .is thenrun down over the threads carried by the rod ends adjoining, as abovedescribed, in assembling the samewTo facilitate this operation, the rodA has a square portion 6 which may be gripped by a wrench ora suitabletool.

In order that the sleeve 5 may be readily entered onto the threads ofthe rod A, peculiar means are provided which will be disclosedhereinafter. At the transverse bearing shoulder 7 of the rod A isprovided a V-shaped groove ,which in assembling the joint Will engage acorresponding V-shaped projection 8 carried by the rod portion B. Thiswill bring the rod ends in alinement facilitating the entering of thesleeve, the threads of which should snugly fit the exterior threads ofthe rod ends. Considering the great length of the rods, it Would requireconsiderable care and effort to bring out this alinement; hence, thegreat advantage of the above described feature.

In Vthe modified form, peculiar locking means for the threaded sleeve 5is provided. The projection 4 of the rod section B is provided with atransverse groove 9 and a notch or recess 10, the purpose of Which Willappear hereinafter.

At one side of the sleeve 5 is out an opening 11 to correspond. with theAtransverse groove 9 of the rod portion B when the sleeve is properlylocatedover the joint of said rod portions A and B. The sleeve 5 has aU-shaped cut in the same providing a free locking tongue or lug l2, saidtongue 12 beingforced inwardly into the recess 10, and thereby lockingthe sleeve securely on the joint. Thus there will be no possibility ofthe same working loose in the use of the rod. 1When it is desired totake apart the joint, the lug l2 may be readily forced out of engagementwith the groove 10 by a pin entered through the groove 9 and the opening11 of the sleeve 5.

In the preferred form, the sleeve 5 is turned to positively engage withthe shoulder 13 of the rod portion A, thereby giving greater rigidity-tothe joint.

Ilaving thus fully described our invention, what is claimed as new iszl.In a sucker rod coupling, a pair of rod sections having interlockinglugs and recesses, a transverse bearing formed thereby, a V-shapedgroove and projection formed in said transverse bearing, and a lockingsleeve engageable over said rod sections. 2. In a sucker rod coupling, apair of rod sections having interlocking recesses and lngstherebyforming a transverse bearing of, therebyforming a locking tongue adapt--ed to engage the aforesaid recess adjacent to the aforesaid groove, andan opening in the side of the sleeve opposite said tongue, said tongueand opening coinciding with the aoresaid transverse groove, so that thetongue can be forced out of its locking position.

In testimony whereof We allimourfsigna- 15 tures in presence of'vtwowitnesses.

i OWEN L MCDONALD.

GEORGE MAPEs.

Witnesses:

E. C. BARKETI, MILES A. FITZGERALD.

